Adjustable culvert-form.



E. E. PEOPLES & R. E. LEE.

ADJUSTABLE CULVERT FORM. APPLICATION FILED 00130, 1913-.

1, 1 44,862. Patented June 29, 1915.

THE NORRIS PETERS 60.. PHOTO-I ITHO., WASHINGTON, o. c

rnarrnp srarns PATENT ens-res.

ELMER E. PEOPLES AND ROBERT E. LEE, OF NEW GOMERSTOWN, OHIO.

ADJUSTABLE CULVERT-FORM.

Application filed October 30, 1913.

To all whom it may concern Be it known that We, ELMER E. Pnornns and ROBERT E. LEE, citizens of the United States, residing at New Oomerstown, in the county of Tuscarawas, State of Ohio, have invented certain new and useful Improvements in Adjustable Culvert-Forms; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in molds and particularly to mold forms for molding culverts in situ. The principal objcct of the invention is to provide a simple expansible device of this character which can be partially collapsed so that it can be removed when the culvert is set.

Another object is to provide novel means for supporting a central portion of the expansible mold.

Other objects and advantages will be apparent from the following description, when taken in connection with the accompanying drawings.

In the drawings: Figure 1 is an end elevation of our culvert form. Fig. 2 is a vertical longitudinal sectional view on the line 2-2 of Fig. 1. Fig. 3 is a vertical transverse sectional view on the line 33 of Fig. 2. Fig. & is an enlarged transverse sectional view on the line H oi Fig. 2.

Referring particularly to the accompanying drawings, 10 represents a plurality of elongated angle bars which are pivotally connected at their opposite ends to radial spokes 11. The inner ends of these spokes are pivotally connected to internally threaded hubs 12 mounted on the end portions of the oppositely threaded bar 13. One end of the bar carries a hand wheel 14 for rotating the bar to cause the longitudinal movement of the hub and the consequent movement inwardly and outwardly of the angle bars 10.

Rigidly secured on the central unthread ed portion of the bar 13 are the spaced collars 15, between which are loosely mounted the disks 16. Loosely engaged between each pair of the disks under the pins 16 carried by the disks and extending radially in pairs toward the outer side of the mold are the Specification of Letters Patent.

Patented June 29, 1915.

Serial No. 798,311.

arms 17 their outer ends being pivotally connected to the central portions of the angle bars 10.

Disposed around the outer ends of the arms 11 and 17 are a plurality of elongated and transversely arcuate plates 19, each of which is secured at one end to one of the angle bars 10, the attached edge of each of the plates being overlapped by the adjacent edge of the neXt plate. Around the ends of the plates 19 are secured bands of wire or other suitable material 18. Thus when the hand wheel 14 is rotated in one direction, the hubs 12 will move toward the ends of the threaded bar and force the angle bars 10 readily outward. The pins 16 effectively prevent the inner ends of the arms 17 from slipping out of position between the plates 16. It will of course be seen that the inner ends of the arms 17 will slide between the disks as the said arms are drawn outwardly by the intermediate portions of the angle bars 10. It will also be noted that the disks prevent longitudinal movement of the angle bars 10 with respect to the plates 19, by reason of the fact that the disks retain the arms 17 in position centrally of the length of the device. Without such an arrangement there would be a tendency of the device to assume a tapered shape, due to a more rapid expanding action at one end than at the other.

What is claimed is:

A culvert mold comprising an oppositely threaded rotatable bar, hubs mounted on the threaded portions of the bar, radial spokes pivotally connected to the hubs, longitudinally extending parallel angle bars arranged in a circular series .and pivotally connected to the outer ends of the said spokes, curved plates supported by the angle bars, loosely mounted disks on the central portion of the threaded bar, and radial spokes loosely secured in pairs between the said disks and rigidly connected to the said angle plates.

In testimony whereof, we affix our signatures in the presence of two witnesses.

ELMER E. PEOPLES. ROBERT E. LEE.

lVitnesses:

SAMUEL ROBINSON, OTTO J. Bnr'rnn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

